e-tec 90 fault code 24 and oil fault

[karharias]

Buzzer is on and fault code 24 "emm temperature below ecpected range detected" is present. Also, in monitor section of diagnostic software "oi fault" reading appears on yellow backround. What could be the cause of these readings? Outboard is an E90FPLEEC 1999 v4.

[boats.net]

Could have a bad temp sensor.

[boats.net]

could have a bad (open) temp sensor.

[karharias]

Which temp sensor? I think emm temperature is measured by internal sensor. (I might be wrong). What about "oil fault" reading?

[boats.net]

Yes EMM temp sensor is internal and can not be tested, check coolant lines for blockage to EMM and check to see if thermostats are stuck open. The oil fault will show if engine wasn't running at time you checked it, if engine was running then check circuit to oil sensor.